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<br />~~Jtt~~R <br />G'FFt^c <br />A~~jv~d <br />SVNNYSIaE GOLa CORPORATION'S ~~`~ ~~/ ,~n~ <br />AN EC80 8AY COM?ANY Ortys~r~~ <br />P.O. Box 177 • Silverton, CO 81433 noftil/neQB/d pd/~ <br />Phone (970) 387533 • Fax (970) 387-5310 Bd@~®~dr <br />February 18, 2003 <br />• <br />Wally Erickson, Reclamation Specialist <br />Department of Natural Resources _ <br />Division of Minerals and Geology ~~ <br />Durango Field Office <br />701 Camino del Rio, Room 125 <br />Durango, CO 81301 <br />J ,~ ~. <br />RE: File No. M-77-378, TR-25 <br />American Tunnel Bulkhead No.3'' <br />Construction Certification Report <br />Dear Mr. Erickson: <br />~F~ <br />ooh. FF9 ~ ~s~~® <br />~Pr <br />o,~ <br />°~. <br />seo~ <br />°ar <br />This letter report is to provide certification that construction of the American Tunnel <br />neaz-surface bulkhead meets or exceeds design criteria. Submittal of a construction <br />certification report was committed to by SGC in TR-25 and required as a Stipulation for <br />TR approval. <br />Pre-pour inspections were conducted by DMG on November 8, 2002 and the design <br />engineer, John F. Abel, Jr. P.E. on November 11, 2002. A letter report from the design <br />engineer, John F. Abel, Jr. P.E. is attached. No deficiencies were found in either pre-pour <br />inspection although there are some variances from the original design explained further <br />below. <br />Bulkhead location <br />The approximate center of the bulkhead, approximately four feet above the sill, on the <br />air-side face (side towards surface) of the bulkhead is a point with coordinates of <br />11,390.51 N, 12,186.11 E at an elevation of 10,594.7 feet. These coordinates are based on <br />a coordinate system with USLM Moultrie being at coordinates 11,964.00 N, 20,000.00 E <br />at an elevation of 12,728.73 feet. <br />i <br />